Such "activation products," commonly produced in nuclear reactors on Earth, give off yet more radiation.

In a nuclear power reactor, the main types of radioactivity are fission products, actinides and activation products.

These "activation products" have become unstable by absorbing a sub-atomic particle called a neutron.

Some nuclides originate in more than one way, as activation products or fission products.

Secondly, the generation of activation products may simply complicate the spectrum.

The lighter elements components include fission products, activation products, and cladding.

Another term sometimes seen in relation to this secondary material (and other material produced similarly) is activation products.

Contamination of the turbine by short-lived activation products.

No, it's a short-lived activation product of pure fusion.

Thus the neutron capture, even after any intermediate decay, often results in the formation of an unstable activation product.